Objective. To evaluate the results of TSRH instrumentation in the correction of coronal

sagittal and rotational deformity of scoliosis. Methods. From January 1998 to December 1999

thirty- two consecutive patients （6 males

26 females） with scoliosis underwent anterior or posterior spinal instrumentation and fusion using TSRH instrumentation. Of these cases

21 were idiopathic scoliosis and 11 were congenital scoliosis. The average age at surgery was 16.4 years （range

11～ 45 years）. The mean Cobb angle at surgery was 71 .2 （range

44～ 125 ） in the coronal plane

and 49.2 （ range

16～ 67 ） in the sagittal plane. Rotational deformity （Nash- Moe） ranged from I to III degree. Preoperative apical translation averaged 4.8 cm （range

3～ 9 cm）. Results. The average follow- up duration was 13.3 months （range

10～ 24 months）.At the final follow- up

the mean Cobb angle in the coronal plane was 26. 6 （range

10～ 73 ）

with a 63.8％ of improvement. Sagittal alignment was well maintained with a mean Cobb angle of 28 （ range

10～ 45 ）. The average correction of rotation of the apical vertebra was I degree. The average apical translation was 1.6 cm （range

0.5～ 5.0 cm） representing a correction rate of 66

7％ . Complication was noted in two cases with an incidence of 3.1％

one case had superficial infection and the other one had lower hook dislocation.There was no neurologic deficit and pseudoarthrodesis in this series. Conclusion. TSRH instrumentation is an effective and convenient three- dimensional correction system with a lower rate of complication

which can not only correct the coronal and rotational deformity

but maintain the sagittal alignment as well.